Alert archive / Pennsylvania / Flash Flood Warnings in 2004
Flash Flood Warning 34, NWS State College, PA
NWS State College, PA issued this flash flood warning at Aug 1, 2004, 3:56 AM EDT for York County, Pennsylvania. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 1, 2004, 3:56 AM EDT (07:56 UTC)
- Expired
- Aug 1, 2004, 10:00 AM EDT
- In force
- 6 hr
- Issued by
- NWS State College, PA
- Area
- Counties, with a storm outline in the text
County York County, PA
The radar
The Sterling radar (KLWX), 135 km from the middle of the area, began a volume at 07:55 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 7.9 hours before the alert went out and 135 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 989 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 1351 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS51 KCTP 010808 FFWCTP PAC133-011400- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 356 AM EDT SUN AUG 1 2004 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A * FLASH FLOOD WARNING FOR... YORK COUNTY IN SOUTH CENTRAL PENNSYLVANIA * UNTIL 1000 AM EDT. * AT 345 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL CONTINUING OVER NORTHERN YORK COUNTY. SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL OVER NORTHERN YORK COUNTY...FROM VALLEY GREEN AND LEWISBURY...SOUTHWEST TO WELLSVILLE AND ROSSVILLE...CONTINUING TO KRALLTOWN. ADDITIONAL HEAVY RAIN CONTINUES TO TRACK ACROSS THIS SAME REGION. DOPPLER RADAR ESTIMATES THAT BETWEEN TWO AND TWO AND ONE HALF INCHES OF RAIN HAS FALLEN OVER THIS REGION FROM 1 TO 4 AM. SMALL STREAMS INCLUDING FISHING CREEK... THE NORTH BRANCH OF BERMUDIAN RUN...AND BEAVER CREEK WILL SEE SHARP RISES AND FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED. MOVE TO HIGHER GROUND. PLEASE REPORT FLOODING...HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772. LAT...LON 4019 7680 3997 7648 3992 7693 4012 7711 $$ JUNG
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 9:31 PM EDT | Flash Flood Warning | CTP | Lancaster | 6 hr |
| Aug 1, 4:54 AM EDT | Flash Flood Warning | CTP | Dauphin | 6 hr |
| Aug 1, 9:34 AM EDT | Flash Flood Warning | CTP | Cumberland | 3 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 2004Every flash flood warning in 2004
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.